Actual memory usage of a process
The following are the memory usage of mysql and apache respectively on my server. As per the output of pmap say, mysql is using about 379M and apache is using 277M.
virtual-memory
Getting information about a process’ memory usage from /proc/pid/smaps
For a given process in /proc/<pid>/smaps, for a given mapping entry what are:
Is the MMU inside of Unix/Linux kernel? or just in a hardware device with its own memory?
So i always thought MMU is part of the unix kernel that translates addresses to physical addresses but in the MMU wiki page it says its a computer hardware that usually have its own memory, but that page doesn’t talk much about Unix/Linux operating systems
Shared library mappings in /proc/pid/maps
Why does /proc/pid/maps contain a few records for the same library ? Here is an example:
Do the virtual address spaces of all the processes have the same content in their “Kernel” parts?
The Linux Programming Interface shows the layout of a virtual address space of a process: